How to clear the custom spell check/AutoCorrect dictionary in Windows 10

Post date: Aug 11, 2015 4:56:10 AM

While typing Microsoft Edge, I accidentally added a misspelled word to my Windows 10 device's spellchecker custom dictionary, and couldn't figure out how to delete it.

Figure 1: I wanted to undo that action...

It turns out that Windows Phone 8 has an option to clear input personalization, but Windows 10 (and Windows 8.1/8, probably) didn't have one at all.

I had to look for the dictionary myself: they're stored in C:\Users\<my username>\AppData\Roaming\Microsoft\Spelling. I deleted the en-CA and the en-US folders, then logged off and on again. Afterwards, the incorrect word is no longer mistakenly recognized as correct.

Microsoft, why isn't this feature included in Windows in the first place?!

ps: Another fun input-related location to examine is C:\Users\<my username>\AppData\Local\Microsoft\InputPersonalization\TextHarvester - the WaitList.dat contains UTF-16 encoded copies of text you recently read to improve handwriting recognition.